Veterinary dental implement.



J. P. KIEFER.

VETERINARY DENTAL IMPLEMENT.

APYLIUATION FILED un. 1, 190s.

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J'OIIN r. nieren, or WASHINGTON, DIsTnIcT or COLUMBIA.

VETERINARY DENTAL IMPLEMENT.

Specification of Letters Patent.

Patented July c, 1909.

Application filed April 1, 1908. Serial No. 424,467.

To all whom it may concern:

Be it known that l, JoIfIN l). Kieran, a

citizen ot the United States, residing at Vashington, District otColumbia, have invented certain new and useful Improvements inVeterinary Dental Implements, of which the following is a specilication.

This invention is a veterinary dental im plement and is designed forcutting oli' the io projecting edges of the molars `when the latter havebecome worn. Heretotore, it has been customary to lilo or rasp down theprojecting edges. This is a very laborious and lengthy operation, re* i5quiring that the horses mouth be propped open tor a considerable lengthof time.

The prime object ot the present invention to provide ior cutting olii orsevering the edges oit the teeth as distinguished from 2o liling, aspingor grinding them, and to enable the cutting operation to be performed bya single quick movement of the implement.

A further object ot the invention is to pro vide 'lor protecting themouth ot the horse against lac-eration by the cutting partsot theimplement.

A still further object ot the invention is to enable the convenientreplacing oi' the cutting element when the latter becomes dull ordamaged. ln this` connection it proposed to provide an improved holder,and to enable the convenient application and re moval oit the tool withrespect to the holder.

ln the drawings,-.Figure l is a perspective view of a veterinaryimplement embodying the features ot the present invention. Fig. 2 is alongitudinal sectional view thereof. Fig. 3 is a cross sectional view on4o the line 3-3 of Fig. 2. Figs. a and 5 are detail perspective views ofdifferent forms of cutter blades.

Like characters ot reference indicate corresponding parts in each ot theseveral ligures of the drawings.

The holder of the present invention includes the head l, trom whichprojects a shank 2 which lies wholly at the bach of the head and isconnected thereto by an integral oiiset 3. A suitable handle 3 isprovided upon the outer end of the shank. That side ot the head which isthe underside in the operation of the implement, is provided with alongitudinal seat produced by a pair of longitudinal lianges 4, each otwhich has an inwardly-directed rib 5 overhanging the `is retracted bypressing seat and delining a groove 6 which is open at its rear end andclosed at its l'orward end by shoulders 7. As clearly shown in l11 ig. lot the d awings it will be noticed that the seat terminates short ot'the rear end ot the head so as to provide a relatively broad or latledge or base S.

Each cutting tool consists ol a rectangular body t) provided with aseries ot transverse cutting or severingteeth. In Fig. l the teeth l()are disposed. at substantially right angles to the longitudinal axis otthe blade, with their long faces inclined longitudinally oi the bladeand their short faces disposed at substantially right angles to theplane of 'the blade. Each end ot each tooth is cut away to iorm aflattened portion 1l.

In Fig. 5 the teeth 10 are inclined or oblique to the longitudinal axisoi the plate, and each end ot each tooth is cut away or reduced, as atll, as explained for the torni shown in Fig. 4t.

Vhen one of the blades is to be assembled wit-h the holder, it is slidendwise inwardly into the seat with its side edges or flanges producedby the cutaway portions l1a received in the groove (3, the depth ot theteeth being such that their cutting edges are .slightly below or flushwith the outer edges ot the ianges 4.

Suitable means is provided tor holding the blade in the seat, such 'torinstance as a springpressed pin or plunger l2. This plunger is mounted.in a bore or opening 13 'formed transversely through the part 3 and otconsiderably greater diameter than the pin. Bushings lll and l5 arethreaded into the opposite ends ofthe opening, there being a suitablespace between the bushings `for the reception ot a helical spring 1Gwhich bears against the bushing l5 and against an annular flange 17 upontlie pin, whereby one end of the latter is projected beyond the front otthe head l in position to engage the rear end ot' the plate and therebyhold the latter against looseness.

In assembling the implement the forward end of the blade is placedagainst. the projecting end oli the pin so as to torce the latter backfar enough to permit of the blade being pushed. forwardly into the seat,and when the rear end ot the blade clears the plunger, the latter snapsout into its normal position and holds the plate in place. Then it isdesired to remove the blade, the plunger thereon with the thumb orlinger and, thereafter, the blade is d "awn rearwardly out of the seat.

It will be noted that the spring-pressed latch or plunger is entirely inrear of the seat in order that the blade may be placed against the outerend of the plunger to retract the same and at the same time to have theblade in position to be slid forwardly into the seat.

In practice, the horses mouth is propped open in the usual manner, afterwhich the implement is thrust into the mouth with the cutting' teethresting upon the teeth of the horse, and then the implen'ient is pressedfirmly against the teeth and quickly drawn out of the mouth, whereby thecutting teeth will sever the projecting ends of the horses teeth .iu avery quick and satisfactory manner without in any manner damaging theteeth. After this one manipulation of the implement, the teeth may betiled down in the usual manner if it is found necessary.

As hereinbefore explained, the only portion of the cutting teeth whichare exposed are those portions which lie between the flanges 4, and,therefme, the mouth of the animal etlectually protected againstlacci-ation because there are no projecting side edges on the blade, asthey are entirely housed by the side walls of the seat.

What is claimed is :n

l. A veterinary dental implement comprising a shank provided at one endwith a handle and at its opposite end with a blade having a series ofcutting' teeth, each tooth, being disposed transversely of the shankwith its cutting' edge presented toward the handle and the direction ofthe series being longitudinal of the shank.

2. A blade for a veterinary dental implement consisting of asubstantially oblong )late havino' a sin o'le series of cuttine' teeth lC 2D b l with their cutting edges presented in the same direction, eachtooth extending transversely of the blade, and the direction of the.series of teeth being longitudinal of the blade.

8. A blade for veterinary dental implements consisting of asubstantially rectangular plate provided with a series of cutting teeth,each tooth extending transversely of the blade, the direction of theseries of teeth being longitudinal with respect to the plate, and theends of the teeth being shouldered, substantially as and for the purposeset forth.

4. A blade for veterinary dental implements comprising a plate providedwith a single series of cutting teeth with their edges extending in thesame direction, each tooth extending transversely of the plate andhaving a length substantially twice its width, the direction of theseries of teeth being longitudinal of the blade.

5. A veterinary dental implement compri sing a shank provided at one endwith a handle and at its opposite end with a seat which is open in oneof its longitudinal faces, there being an internal longitudinal grooveat each side of the open face portion of the seat, and a blade fitted inthe seat with its opposite edges received within the respective grooves,said plate being provided with a single series of cutting teeth exposedthrough the open face of the seat, each tooth being' disposedtransversely of the blade with its cutting' edge presented toward thehandle.

In testimony whereof I afliX my signature, in presence of two witnesses.

JOHN P. KIEFER.

lWitnesses JNO. C. ATi-inv, JAMES L. Kannron.

